I need Idea for existing site

[SendBlast]

Site has to do with social networking combined with fitness and diet. What fun thing can i add to them, that would want them to visit everyday

[imblogger]

track your health chart

[startupstudent.com]

Cool idea!

Maybe what I ate today or something like that. Show what your friends ate etc.

[omarfaizan]

you Can Suggest people various diet plans on daily basis which whold make them visit the site again and again like calorie intake..etc...

[akula]

comparing community stats...like weight/height ratio, bicep size, bench press kilos etc..

i.e. i wanna go on a site, input my numbers and see how I compare to the rest of the community..like what quartile I'm in and whether I can do better or worse

[Daniel J. Bertelsen]

health chart tracker
diet plans and diet tracker

an index of what exercises to do if you want to exercise a specific area of your body with small animations showing how to perform a given exercise correctly.
This feature would also go good together with the health chart tracker and diet plan tracker, since people might keep a track of what part of their body they want to improve, which the exercise-index/glossary then will provide them with the necessary knowledge.